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Sharing GIS Technologies, Resources and News.

GIS Tutorial

Automated Raster Extent Vectorization Using ArcPy

When managing large volumes of high-resolution satellite imagery (e.g., 1:10,000 scale sheets), visu...

Topic: GIS Tutorial sailor 2024-12-16

GIS Tutorial

Creating Marathon Distribution Heatmaps in QGIS

Following our previous article on Processing China Marathon Data for Spatial Analysis, this guide de...

Topic: GIS Tutorial sailor 2024-12-15

GIS Tutorial

Processing China Marathon Data for Spatial Analysis

In follow-up to our tutorial on Creating Dynamic Marathon Route Visualizations with MapPlus: A No-Co...

Topic: GIS Tutorial sailor 2024-12-13

GIS Tutorial

Open-Source Dashboard Templates for GIS Developers: BigDataView Project

During discussions in our GIS community chat, a colleague humorously noted: "After three years in 3D...

Topic: GIS Tutorial sailor 2024-12-11

GIS Tutorial

Authoritative World Map Vector Data with Official Approval Number (AMap Source)

Building on previous world map solutions—either officially approved but misaligned or precisely geor...

Topic: GIS Tutorial sailor 2024-12-03

GIS Tutorial

Georeferencing Marathon Route Maps in QGIS: Manual vs. AI-Assisted Approaches

When crafting dynamic marathon routes from official maps, directly tracing simplified route images i...

Topic: GIS Tutorial sailor 2024-11-27

GIS Tutorial

Batch Exporting CAD Layers to Shapefile in QGIS

When processing DWG data in QGIS, exporting multiple layers individually becomes tedious. Here are t...

Topic: GIS Tutorial sailor 2024-11-25

GIS Tutorial

Creating Dynamic Marathon Route Visualizations with MapPlus: A No-Code GIS Solution

When asked about generating dynamic marathon route maps like those in Beijing Marathon 2024, I disco...

Topic: GIS Tutorial sailor 2024-11-22

GIS Tutorial

Extracting Administrative Division Codes from Authoritative National GIS Datasets

In our previous article 《「GIS Data」Download Updated National Administrative Division Codes》, we disc...

Topic: GIS Tutorial sailor 2024-10-14

GIS Tutorial

Exporting Administrative Division Codes from QGIS Attribute Tables

When our frontend team requested updated administrative division codes, I leveraged the 2024 nationa...

Topic: GIS Tutorial sailor 2024-10-07